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DNA Structure and Replication

DNA Structure and Replication
DNA with a G-C content of 50% will melt at approximately

100 °C
60°C
90 °C
70 °C

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DNA Structure and Replication
Which polymerase is active in DNA repairing

Polymerase II
none of these
Polymerase I
Polymerase III

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DNA Structure and Replication
The most common liquid volumes in molecular biology are measured in

ml
μl
nl
1

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DNA Structure and Replication
The nucleosome consists of histone

octamer and 146 bp of DNA
tetramer and 146 bp of DNA
hexamer and 146 bp of DNA
None of these

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DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

twisting number
linking number
helix frequency
none of these

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DNA Structure and Replication
In a cesium chloride gradient, DNA labeled with 15N and centrifuged will form a band

with 14N-containing DNA
below DNA containing 14N
all of these
above DNA containing 14N

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